[cornel_io]

Sure, but water isn't scarce everywhere, so optimization for water cost is not like carbon footprint where it all gets blown into the atmosphere and is bad. Many regions don't need to worry about water at all so it's basically free.

[dragonwriter]

Diverting high quality agricultural soil is even more expensive than diverting water, though.

Irrigating California deserts and semi-arid regions for agriculture isn’t just some kind of random vanity project.